Building Technical Regulation STR 2.01.09:2005

Lithuania’s mandatory Technical Regulation of Construction is a performance-based code that requires an energy frame (reference building) calculation to establish the maximum allowable energy consumption of new residential and non-residential buildings. The regulation also sets energy frames for existing buildings undergoing renovation, which are generally 20-30% less stringent. The regulation addresses thermal envelope requirements and energy-using systems within the calculation, including, HVAC, hot water, lighting and bioclimatic design initiatives.

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